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UNITED STATES PATENT O FICE.

FREDERICK WV. MOORE, OE PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO JOHN T. BARNES, OF SAME PLACE.

COM POSITION FOR COATING COFFEE.

SPECIFICATION forming part of Letters Patent No. 393,917, dated December 4, 1888. Application filed August 25, 1888. Serial No. 283,778. (No specimens.)

To all whom it. may concern; to keep them sweet. The proportion of bi- Be it known that I, FREDERICK MOORE, carbonate of soda is regulated by the quantity a citizen of the United States, residing in of milk, glue, and glycerine. The table-salt Philadelphia, Pennsylvania, have invented a is used to settle the cofiee, so that the grounds 55 certain Improved Compound for Coating Cofare not in the cup when prepared for the table, fee, of which the following is a specification. and is used, also, to aid the soda in preserv- My invention relates to a preparation to size ing the milk, glue, and glycerine. The Vine or coat the grains of roasted coffee in order to gar controls the glaze and polish. The reretain the strength and aroma. fined lard takes the place of the oil that evap 6o 10 In compounding the miXtureI use the folcrates from the coffee-bean in roasting.

lowing in gredients: either milk or condensed It will be understood that the main ingremilk, ground or powdered glue, liquid glycerdients are milk, glue, glycerine, and lard. inc, and refined lard, and in some cases bi- The vinegar can be left out, as it affects only carbonate of soda, fine table-salt, and vinegar. the glaze or polish of the roasted coffee in 6 5 I5 I will first give the proportions of my comkeeping down too high a polish. The bicarpound in making a sizing for one bag of green bonate of soda can also be omitted without incoffee of about one hundred and thirty pounds. jury, as it only acts to keep the other ingre- To two gallons of milk add from one and a clients sweet. If the mixture should be made half to three and a half pounds of ground or and used at once, the bicarbonate of soda and 70 2o powdered glue and from one and a half to salt need not be used; but if the mixture is two and a half pounds of liquid glycerine, and to stand any length of time it is preferable to to this add one-sixteenth to one-half pound of add the above-named ingredients. bicarbonate of soda and from one-fourth to The mixture is applied to the coffee-grains three-fourths of a pound of fine table-salt and in the following manner: The coffee is roasted 75 one to three pounds of vinegar and from one drythat is, without the addition of water to three and a half pounds of refined lard. and the grains are then removed from the In place of the milk, two to four pounds of roasting-cylinder and allowed to cool enough condensed milk, with or without sugar, may to ei'aporate the compound, which is then apbe used, dissolved in one to two gallons of plied gradually and evenly over the roasted 8o warm water. coffee. The mixture consequently hermetie The milk or condensed milk is slowly heated ally seals and closes the pores of the grains. over the fire, and when hot the glue is poured The coffee is then placed on a drier, and either in and allowed to dissolve by slow boiling. dried by artificial heat or by natural heat, as The glycerine is then added, then the vine the case may be. 8 5 3 5 gar, salt, lard, and bicarbonate of soda. The I have found in coating the grains of coffee mixture must be kept slowly boiling and must by the above compound that I seal'the grains, be stirred to prevent it from burning or scorchthus preventing the aroma from escaping and ing. After all the ingredients are added and retaining the full strength of the bean, and I have boiled a few moments it is removed from have found by eXperim-entsthat moisture or 0 40 the fire and allowed to cool, and can be apsalt or damp atmosphere cannot penetrate the plied to the roasted coffee when medium warm. bean, and consequently the coffee can be used The glue is used to give the desired glaze or in all climates,being always tender and fresh. polish to the coffee-grains, and consequently I have also found that the roasted coffee,when more or less glue is added to the compound, coated, does not need the introduction of arti- 5 "according to the polish required, as some 0011- cles in the coffee-pot to settle the coffee, as the sumers prefer a very bright glaze or polish, various articles used in the mixture do that while others do not like so much glaze. The work. I have also found that caffeine-a very liquid glycerine is used, in connection with the valuable medical property of coffeewhich is glue, to glaze or polish the coffee, while the evaporated and lost by the old process, is re- 100 bicarbonate of soda is used as a preservative tained to the fullest degree by my improved of the milk, glue, and glycerine, and in order coating.

I claim as my in\'0nt'i011- In testimony whm'vutl havosignctimyname 1. A compound tm'contilw'01'glnzingvotfoo, to this spti-vitimtiml in thvprvsonwottwo suh- 1o composed of miik, glue, glycerine, and 12ml, sm-ibingr witnesses. in or thout the m) )m't'ions nnnot't. I r V 1 a 1 f I vmanmm l\ MOORE. 5 .7- A compound tor coating 01? glazing the voifecJJmm, composed 0 i milk, 5.;1 no, glycerinv, W it'n osscs: bical'boimtv of soda, vinegar, laid and suit, in HENRY UtHVSON, and about the proportions mimoti. .1011): I). YJULRUW. 

